Benefit the public at large or a group of people within society

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I'm seeking comments and arguments to demonstrate how pursuing the matter of Grandparents denied contact with their Grandchildren is of Public Interest and would benefit the public at large or a group of people within society to submit to the Attorney General's Department, Canberra.

Also comments and arguments to demonstate the prospects of success factors. What factors are considered that would show that the case of grandparents & grandchildren denied contact is more likely than not to succeed?

First they ignore you, then they laugh at you, then they fight you, then you win. M K Gandhi